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Finding the Fourth Proportional to 62,857.80, 94,286.70 and 54,304.20

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Solution

The fourth proportional to 62,857.80, 94,286.70 and 54,304.20 is: 81,456.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,857.80 : 94,286.70 = 54,304.20 : x
  2. Step 2: Convert to fraction form
    62,857.80/94,286.70 = 54,304.20/x
  3. Step 3: Cross multiply
    62,857.80x = 94,286.70 × 54,304.20
  4. Step 4: Simplify right side
    62,857.80x = 5,120,163,814.14
  5. Step 5: Solve for x
    x = 5,120,163,814.14/62,857.80
  6. Step 6: Final answer
    x = 81,456.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.